Dust guard for journal boxes



vJuly 28, 19351.L w. N. THORNBURGH v 1,816,704

DUST GUARD FOR JQURNAL BOXES Filed Jan. 50, 1922 Patented July 28, 1931 l j UNiTED STATES PATENT oFFINcE WILLIAM N. THORNBURGH, OF CHICAGO, ILLINOIS v DUST GUARD non JOURNALV Boxns Application inea January 3o; i922. 'serial No. 532,562'.

This invention relates to improvements in nal brass 19 mounted on the bearing 20Hsedust guards for journal boxes and its purpose cured in the upper part of the journal box. is to provide a simple and improved device The dust guard formed .according to the having great efliciency in operation. present invention comprises a plurality of The principal object of the invention is to wooden laminations 21, preferably ve or 55 provide a dust guard provided with a resilient more in number, which are secured together washer adapted to maintain contact with the by Waterproof glue, or the lile,`tlie grain of car axle. A further object is to provide a the wood in each lamination being extended laminated wooden dust guard comprising resubstantially at `right angles .to the grain of 10 silient means for securing and maintaining the wood in the adjacent lamination, so that e0 contact with the car axle. A further ob'ect greater strength is imparted to the composite is to provide a journal box comprising a dust structure and the warping of the dust guard guard designed to permit relative movement prevented. The wooden lamination toward of the car axle with respect to the journal the outer end of the journal box is undercut 15 box without causing damage to the dust as shown at 22 and a leather Washer 23 is se- 65 guard. Other objects relate to various feacured in this annular 'recess by nails 24 or tures of construction and arrangement which the like, these nails preferably extending will appear more clearly hereinafter. through the laminations as shown in F ig. 4 in The nature of the invention will be underorder to secure them more firmly together.

30 stood from the following specification taken The leather washer 23 is preferablyrather 'J0 with the accompanying drawings, in which stili and should have a considerable resilience one embodiment is illustrated. In the drawso that the portion 231 thereof which is bent ings.` inward, maintains a tight contactwith the Figure 1 shows a longitudinal vertical secannular reduced portion 18a of the car axle'.

25 tion through a journal box and dust guard The parts are so proportioned that the thick` 75 embodying the principles of the present inness of the'loating washer 23a, plus the disvention, illustrating the relation of these tance 25 between the lower edge of the dust parts to the @a1- axle; Fig, 2 Shows an end eleguard and the wall of thedust guard slot, is vation of the dust guard looking toward the leSS than the distance 26 between the car axle 80 left, as viewed in Fig. 1 Fig, 3 illustrates a and the adjacent edges of the flanges 12 and 8o side elevation of the dust guard; and Fig. 4 13, S0 that when the cai' axle has relative shows a detail vertical Section of the lower IIIOVemeHt-With respect to the journal box, part of the dust guard slot, illustrating the 3S fOI GXaIIIPIG, When the Car 1S StOpped Slid-v relative positions of the parts; Fig. 5 shows denly the eX1e W111 come 1n Contact Wltn the the detail sectional view `on the line 5 5 of edges O f the nenges 12 and 13 before the dust 85 Fig. 2 looking in the direction of the arrows. guard 1S Crushed between the eine and the Referring to the drawings the invention is walls of the dust guard slot. This construcillustrated in connection with the journal t10n-reheve-s the dust guard of all unusual box 10 havinfr the usual cover 11 on one end Stmm and lt 1S. found that the .guards 001.1

10 b structed according to the principles of this `9G wall thereof and double flanges 12 and 13 t d b1 forminOr the other end wall and s aced apart miren l'on ar? Very um e m Pmeuce and p maintain a tight closure at the inner end of to provide a vertical dust guard slot 14, which the ,-Oumal box. is open at its upper end to receive a dust A'S a further means of insuring a tight com 5 guard 15' The Hanges 12 and 13 11e-Ye Open tact between the leather washer and the part 95 Inge 16 and 17 tneretnrengn reSPeetVeLV P0 18a of the car axle, a pair of pressure members receive the Caf M16 1 8, WhlCh 1S TedUCed 111 30 are mounted on opposite sides of the axle diameter at 18a within the dust guard, and so that when the car is stopped suddenly the still further reduced in diameter at 18h, tendency of the car axle to move longitudiwhich latter portion contacts with the journally of the car and thus destroy the contact 10 v KL.

of the leather Washer will be overcome by these pressure members which are mounted to move in a horizontal plane. These members have pins 3l projecting therefrom into recess o2 which are formed in the laminations of the dust guard as shown in Fig. 2, and springs 33 mounted in these recesses are adaptedtc force the members 30 toward the car axle and thus maintain the leather Washer in contact therewith.

Although l have shown and described one form of the invention for the purpose of illustration, it is understood that it may be constructed in various other embodiments without departing printed claims.

l claim: l

l. A dust guard for journal boxes comprising a rigid unitary structure formed of a plurality ot similar Wooden laminations having an aperture therethrough to receive 'the car axle, an annular resilient leather washer having a portion thereof seated ,against one sideor1 said laminated structure and having an annular flange turned inwardly Within said opening and adapted to maintain con tact on its lateral side with the peripheral surface of the axle, and securing devices eX- tending through said annular Washer'and through the laminations of saidstructure for securing all of said parts in assembled relation.

2 A dust guard for journalrboxes comprising alaminated member having an aperF ture therethrough to receive the car axle, a resilient annular Washer secured to one side of said member and having anv intu-rned annular lange adapted to Contact With the an,-

nular surface of said axle, curvedpressure members located on opposite sides of said axle on the outer side-of said intnrned flange of lsaid Washer, pins extending radially outward from said pressure members, said laminated member having recesses to receive said and coil springs mounted inside of said recesses around said pins for forcing said pressure member radially inward to maintain said resilient Washer in Contact with said aXle. f

WILLIAM N. THORNBURGH.

from the scope ot the 

